local robot = require("robot")
local event = require("event")

print("Control using w,s,q,e. Exit using c")

while true do
    local _, _, ascii, _, _ = event.pull("key_down")
    local ch = string.char(ascii)
    if ch == 'q' then
        robot.turnLeft()
    elseif ch == 'e' then
        robot.turnRight()
    elseif ch == 'w' then
        robot.forward()
    elseif ch == 's' then
        robot.back()
    elseif ch == 'c' then
        break
    end
end